| Item type |
文献 / Documents(1) |
| 公開日 |
2024-01-15 |
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 出版社版DOI |
|
|
|
関連識別子 |
https://doi.org/10.1116/6.0003101 |
|
|
関連名称 |
10.1116/6.0003101 |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| タイトル |
|
|
タイトル |
Plasma-assisted annealing of Pt-doped rutile TiO2 nanoparticles for enhanced decomposition and bacterial inactivation under general lighting |
| 著者 |
川上, 烈生
マキノ, ユウタ
柳谷, 伸一郎
白井, 昭博
ニイベ, マサヒト
ナカノ, ヨシタカ
|
| 抄録 |
|
|
内容記述 |
Enhanced photocatalytic activity of rutile-based TiO2 materials under general lighting is practically desired. O2 plasma-assisted annealing (PAA) effects on Pt-doped rutile TiO2 nanoparticles were clarified along with its visible-light-driven photocatalytic activity enhancement. The PAA-treated samples were mainly analyzed using optical spectroscopy and x-ray photoelectron spectroscopy (XPS). The photocatalytic activity was assessed by decomposing methylene blue dye and inactivating Bacillus subtilis under general lighting. The PAA treatment changed the O 1s, Ti 2p, and Pt 4f spectra of XPS from those of the pristine sample. This change indicated that the PAA treatment introduced more oxygen deficiency or oxygen vacancies and more oxygen groups adsorbed on the surface. The introduced oxygen vacancies and adsorbed oxygen groups would change the band structure, which primarily narrowed the bandgap energy or broadened the valence band edge, increased the number of electron-trapping sites from the shallow to midgap levels, and enhanced the upward band-bending at the surface. The PAA-induced change in the band structure enhanced the decomposition and bacterial inactivation because it facilitated the separation and concentration of photoexcited carriers. The findings provide a new perspective on enhancing the photocatalytic activities of rutile-based TiO2 nanoparticles under general lighting. |
| 書誌情報 |
en : Journal of Vacuum Science & Technology B
巻 42,
号 1,
p. 012203,
発行日 2024-01-11
|
| 収録物ID |
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|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
21662746 |
| 収録物ID |
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|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
21662754 |
| 収録物ID |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA10804928 |
| 出版者 |
|
|
出版者 |
AIP Publishing |
| 権利情報 |
|
|
権利情報 |
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Retsuo Kawakami et al., J. Vac. Sci. Technol. B 42(1), 012203 (2024) and may be found at https://doi.org/10.1116/6.0003101. |
| EID |
|
|
識別子 |
404610 |
| 言語 |
|
|
言語 |
eng |
jvstb_42_1_012203.pdf (3.54 MB)
